Idle dagger rod and light shuttle box device



J. CHAPMAN ET AL ,46

IDLE DAGGER ROD AND LIGHT SHUTTLE BOX DEVICE Nov. 16, 1937.

Filed Aug. 22, 1955 l4 /0 INVENTOR.

56.63 J'AMIS CHAP/Il N If 0 j 1Z4 M- H5, 7 Z1; 1 56.9 ATTORNEY.

Patented Nov. 16, 1937 umrso snares PATENT ()FFlCE IDLE DAGGER ROD AND LEGHT SHUTTLE BOX DEVICE James Chapman, Atlanta, and Benjaman W.

' Brown, Hapeville, Ga.

Application August 22, 1935, Serial No. 37,338 Claims. (01. 139-347) Our invention relatesto improvements in the to be properly boxed then, according to our inprotector mechanism of looms. The invention vention, the dagger or daggers will be positively has for its particular object the reduction in the moved into the position of protection so as to movement of such parts of known types of looms strike the steels in the frogs, t y knocking off 5 as the dagger, or daggers, the protector rod, and the shipper handle andstopping the loom. 5 parts associated therewith. It is also an object n the cc p ny d w Which is d of our invention to reduce to a minimum the moa p r h reof only those portions of a loom are tion of any of the parts associated with the soshown which are necessari to p p y illustrate called smash protection mechanism and to make our invention. Throughout the drawing similar such parts of this mechanism as are subjected parts will be referred to by similar characters 10' to continual motion as light, simple, and free of reference.

running, as possible. It is also an object of our 1 is P View of the o n ve w c invention to reduce the heavy pressure now imis a important n t of 0111 inv nt on.

posed upon a shuttle, whenever it leaves or enters 2 is a d V w of the loading l v either box, thereby giving what is known as a ferred to in Fig. 1 showing in this case a'modi- 15 free box. our invention eliminates all motion fled m f l n hm and l showof the dagger or daggers and of th protector ing the lever in its extreme lower position against rod and associated parts except during the period the pwhen a stoppage is about to occur. It will be 3 i a i Vi w f a m dified form of the 0 obvious that in a loom where the daggers and Protector rod c t ol levelprotector rod may oscillate as many as 10,000 Fig. 4 is a side elevation of a conventional loom times an hour that any device which will entirely ow n e preferred form of our invention stop the motion of th se rt whi h t stalled thereon; in this view the lay is shown in only very heavy but which must of necessity carry its eXtieme forward Position- 2 an extremel heavy spring lo d, 111 t i u Fig. 5 is a side elevation of a conventional form reduce the power required to u th 1 d of loom showing our invention installed thereon; will also reduce the wear and tear on the machine in this View the lay is shown in a p s on such as a whole and will especially reduce the wear that the pitman is in a partially raised p t o on such parts as the shuttles, belts, picker-sticks, Fig. 5 is a real View showing P of a co pick 111g St a 111g ti k pick-balls, d ventional loom with our invention installed therehangers. It will appear as the description proceeds that when our invention is installed on a 7 is an enlarged View of the p mec aloom that the ta er commonly present in t nisrn which forms a part of the loading lever used shuttle boxes may be materially reduced, if not in our onentirely eliminated, thereby increasing the bear- 3 is an end View of the fixed portion of 35 ing surface on the shuttle from about 20% as this m chan smis now usual practice to as much as 100% in some F g. 9 is an end view of the stop shoulders o cases. As a result of this increase in bearing the movable portion of this me anism. surface as well as the light spring pressure on the 10 is a p .V ow g one form 0f shuttle it will be seen that there will be much less upper b i i and the method of etteeh- 4'0 danger of crushing or otherwise distorting the e it to e p a shuttle while it is in the box, Fig. 11 is an end View of this fitting showing tion the protector r d, dagthe pitman, to which it is attached, in section. gers, and parts associated therewith oscillated 12 s a P w of the loading ever (It) with every beat of the loom, this motion was shown in Figs. 2, 4, 5, 6, and 7, showing i 45 interrupted only when a shuttle failed to be this e a spring for holding this lever properly boxed in which case the dagger or daga n t owe pgers were not lifted into the clearing position and In the drawing Which forms a P of t s pas a result struck the steels in the frogs which. Plication o i v o s shown in place on a knocked OK the shipper handle and stopped the conventional loom, however, only such portions of 50 loom. According to our invention the dagger this loom are shown as will enable those skilled or daggers are held in a stationary position durin the art to understand the construction and ing the entire time that the loom is operating in operation of the invention. Throughout this a normal manner, (1. e. so long as the shuttle drawing the numeral I refers to themain frame enters either box) but should the shuttle fail of the loom, 2 refers to the lay, 3 to the swords, 55

4 to the daggers, 5 to the protector rod, 6 to the pitman, I to the shuttle box, 8 to the shuttle, and 9 to the shuttle box finger. In our invention a special form of lever H) which is referred to as a loading lever throughout these specifications, is shown mounted on a rod or pin 1 l extending out from the side of the loom frame I. This lever is supplied with a plurality of notches l2 on which a weight I3 can be hung. If desired a plurality of holes could be drilled through the side of this lever and the weight I3 could be hooked therein in any suitable manner, or for that matter, the weight I3 could be dispensed with entirely and a spring 15, Fig. 12 could be used in its place. Attached to the loading lever It at or near its end are two bearing pins I4 and I5. These pins can be disposed opposite each other as shown in Fig. 1 or displaced from each other as shown in Fig. 2, or for that matter may be located in any suitable manner with respect to the lever so long as the desired results can be obtained. In the preferred form of the invention shown in Figs. 4, 5, and 6, a'rod I6 witha suitable boss or bearing formed on its lower'end is fitted on the bearing pin I5 and a second rod I! with an elongated yoke I8 at its lower end is fitted on the bearing pin I4. The rod I6 has a yoke I 9 formed at its upper end which is in every way similar to the yoke I8 formed on the lower end of the rod IT. The yoke I9 on the rod l6is fitted over a special bearing pin 20 which is mounted on the pitman in any suitable location. The upper end of the rod I1 is fitted with'a clevis 2| or other suitable fitting which is attached to the protector rod control lever 22 in any suitable manner. tially as follows. Before installingthe invention on a conventional form of loom it is'first necessary to reverse the direction of theprotector rod spring 23 so that it will serve to holdthe protector rod 5 against its-upper stops thereby holding the daggers 4' normally in their extreme upper position. This change in the sense of action of the protector rod spring 23 is an important feature of our invention since it causes the daggers 4 to stay stationary against their upper stops and in a position substantially perpendicular to the plane which contains the lay and the swords as long as the loom is operated in a normal manner. It will be apparent as the description proceeds that the daggers will have no motion with respect to the lay except when a smash is about to occur, in this respect the action of the daggers on a loom upon which our invention has been installed is entirely different from their action on a loom which is not equipped with our device since on such a loom the daggers normally oscillate with every beat of the lay. At the same time that the protector spring 23 is reversed it is loosened to a material degree since with our invention the protector spring serves the primary purpose of holding the daggers against their up per stops while in a'loom not equipped with our invention this spring must be very tight so that it can force the heavy daggers down into the stopping position in a fraction of a second and at every beat of the loom. It will be obvious that with the conventional arrangement the shuttles must at every stroke be forced into their boxes against this heavy spring load thus causing them to undergo excessive wear and also'consume large amounts of power which could otherwise be used to operate the loom or other machinery. With as shown in the drawing and with the protector The operation of the device is substan- 7 these conditions the protector rod and the daggers attached thereto cannot. be rotated so as to allow the daggers to drop. It will be seen by referring to Fig. 4 that the rod I! which is attached at its upper end to the protector rod control lever 22 is' in tension under this condition and serves to support the loading lever I0 against the action of the spring (15) or the weight (I3) as the case may be. As the lay beats back the shuttle leaves the box but the protector rod and its attached daggers are now prevented from rotating by the action of the rod l6 and its associated fittings since the raised position of the pitman causes this rod to pick up the load of the lever I 0 and the weight or. spring attaohed 'thereto. The front rod I! is now relieved of its load as will be seen by reference to Fig. 5 wherein-the yoke I8 attached to the lower end of this rod is shown clear of its bearing pin I4. As the lay moves still further to the rear the pitman fi startsto lower and the rod I6 begins to assume a lower position such that the loading lever will rotate in a downward direction. If this action were al lowed to continue the loa'dwouldf be transferred. back to the front rod I 1 before theshuttle-was inits box thus causing the weight I3 to pull downthe protector rod control lever. 22 and cause the protector rod 5' to rotatein sucha manner'as to depress the daggers which is not'desired. In

order to prevent such a condition from occurring Ill is formed with a shoulder i the-loading lever which is sodisposed that in certain-positions it will rest against loading lever drops below acertainpoint it will be supported entirely by the shoulders 24v and 25 thus relieving the rods I6: and H of its weight. As the lay continuestobeat forward the front rod I! will also ,move forward and. will again However, it should behas any time to jump, or bound out that the weight I3 or the spring (IE9 is, through its.as-

sociated connections, caused to" bear against the shuttle and thus hold it in place. be seen that just before the shuttle starts to leave the box that the lever It picks up this load,:thus allowing the box to-become free and allowing the shuttle to be expelled therefrom with avery light force. It will likewise be obvious to all those skilled in theart that should the shuttle for any reason fail to enter the box at the proper time that the rod I'lwill, due to the action of the weight It or the spring ('55), pulldown: on the protector rod control lever, thus rotating theprovtector rod 5-which will in turn depress the-daggers 4, thereby causing them to strike thesteels inv the frogs 26 and stop the loom. When'the device is properly installed and adjusted the action is very smooth and the load is transferred from'thelever' I! to the lever 25 and thence a shoulder 25 which'is attached. rigidly to the loom frame I- by means of' the pin II upon which the loading lever l0 rotates. Theshoulders '24 and 25 are so disposedthat when the It will also and its associated load, is supported by the stops ing the; daggers to move or oscillate inthe slightest degree and without causing a shock or blow to come on the system. During this whole cycle the shuttles W111 never enter or leave a box or move therein except when the yoke i8 is in its free position as illustrated in Fig. thus giving at all times, when the shuttle is in motion, a free box. It will be obvious to all those skilled in the art that either or both of the yokes it and/or is could be dispensed with and other suitable, fittings which would perform the same function could be used. In Fig. 3 one such modi fled arrangement is shown. In this case the pro-- tector rod control lever 22 is simply fitted with a hole of diameter considerably larger than the diameter of the front rod ii and this rod which now has a stop 21 at its upper end is allowed to slide therein. In a similar manner the back red l6 could be suitably modified and attached to a specially drilled fitting attached to the pitman, or for that matter the lower ends of either or both rods could be allowed to slide in fittings of this character attached to the loading lever. It will likewise be obvious that both of the yokes could be fastened to either the upper or the lower ends of the rods and such a form of construction is illustrated in Fig. 2 wherein the lower bearing pins I4 and it: are shown displaced with respect to each other. In this figure the loading lever is shown in its extreme low position resting against the stops 24 and 25. If it is desired to dispense with rigid rods such as l6 and I! any form of suitable tension members such as rope, cable leather or steel straps could be used. and the yoke fittings l8 and I9 could be entirely eliminated since with this form of construction the members referred to would simply flex whenever they were out of action thereby allowing the machine to operate substantially as described. As a matter of fact the machine will operate in a satisfactory manner with the back rod it entirely removed but in this case during certain portions of the stroke the dagger will oscillate slightly which is not desired. It should be borne in mind however that one rod operation is entirely suitable since a relatively free box is obtained and the oscillation of the dagger is much less than that which occurs in the conventional form of loom, while at the same time all of the safety features of the device are retained.

Having thus described our invention what we claim as new is:

1. A loom with a shuttle, a shuttle box, a binder, a binder finger, and means for stopping the loom, a protector rod and a dagger attached thereto mounted on the lay of the loom, spring means associated with said protector rod and so disposed as to hold said dagger in its upper position,

an arm mounted on said protector rod, a lever pivotally mounted on the frame of theloom, rod means connecting said lever to said arm, a pitman, and rod means connecting said pitman to said lever, load means for depressing said lever and stop means associated with said lever and the frame of the loom, the combination of means being so disposed that when the shuttle of the loom is in its box that the lever, and its associated load, is supported by means of the rod connected to the arm aforementioned, the protector rod, the binder finger, the shuttle binder, and the shuttle, but when the shuttle is not in its box and the pitman is in a raised position, the lever, and its associated load is supported by the rodconnected to the pitman and the pitman, and when the pitman is in a depressed position the lever,

attached to said lever and to' the frame of the loom; in all cases the protector rod and the dag gers associated therewith being free of load and heldagainst their upper stops by means of the spring aforementioned unless the lay should 'be forward and the shuttle out of its box in which condition the'lever, and its associated load, acts through the rod and the protector arm aforementioned and causes the ,protector rod to rotate against the action of the protector rod spring thus throwingthe daggers into engagement with the stopping means thereby stopping the loom and preventing a smash. l

'2. A loom with a lay, a shuttle, a shuttle box, and a protector rod mounted on the lay, a dagger attached to said protector rod and loom stopping means adapted tocooperate with said dagger, a lever pivotally mounted on the frame of the loom, stop means for preventing an extreme downward movement of said lever, spring means attached to said lever and tending to force it against said stop means, means associated with said protector rod and said lever such that in case a shuttle of the loom should fail to be properly boxed that said lever will be depressed in the direction of the stop means aforementioned thereby rotating the protector rod in such a way as to throw the daggers attached thereto in a position where they will strike the loom stopping means thus stopping the loom.

3. A loom with a shuttle and a shuttle box, a lay and a pitman adapted to actuate said lay, a protector rod mounted on said lay and a protector rod spring adapted to actuate said protector rod, daggers attached to said protector rod and adapted to rotate therewith, an extension arm attached to said protector rod and adapted to rotate therewith, a loading lever and means connecting said extension arm to said loadin lever pivotally mounted on the frame of the loom, means connecting the pitman to said loading lever and adapted to oscillate said loading lever, and stops to limit the movement of said loading lever, spring means associated with said loading lever and so disposed with respect thereto as to urge it in the direction of said stops and in a direction opposed to that caused by the means attached to the pitman, means adapted to transfer the load of said spring means directly to the shuttle whenever the shuttle is in its box, said means being so disposed, however, that should the shuttle fail to be properly boxed the spring load aforementioned will act through the extension arm, attached to the protector rod, and cause said protector rod to rotate the daggers, attached thereto, into the position for protection.

4. A loom with a shuttle and a shuttle box, a lay and a pitman adapted to actuate said lay, a protector rod mounted on said lay, daggers attached-to said protector rod and adapted to rotate therewith, an extension arm attached to said protector rod and adapted to rotate therewith, a loading lever pivotally mounted on the frame of the loom, means connecting said extension arm to the loading lever, means connecting the pitman to said loading lever and adapted to oscillate said loading lever, and stops to limit the movement of said loading lever and means including the loading lever, and the protector rod extension arm, aforementioned, adapted to rotate the protector rod and the daggers attached thereto into the position of protection in case the shuttle should fail to be properly boxed.

5. A loom with a shuttle, a shuttle box, a binder,

a. binder finger, and means for stopping the lay,

a protector rod and a dagger attached thereto mounted on the lay' of the loom, spring means associated with said protector rod and so disposed connecting said lever. to said arm, a pitman, and

means connecting said pitman to said lever, load means for depressing said lever and stop means associated with said lever and the frame of the 100m, the combination of means being so disposed that when the shuttle is in its box that the lever,

and its associated load, is supported-by the means 7 connected to the arm, aforementioned, the proector, rod, the binder finger, the shuttle binder,

and the shuttle, but when the shuttle. isnotin its box and the pitman is in a raised position, the

lever, and its associated load is supported by the means connected to the pitman and the pitman, and when the pitman is in a depressed position, the lever and its associated load are supported by the stops attached to said lever and to the frame of the 1oom,'the combination of means being so disposed, however, that should the shuttle fail to be properly boxed, the lever and its associated load will cause a rotation of the protector rod and the dagger attached thereto in a direction such as to cause the dagger to engage the lay stopping means and stop the lay.

BENJ AMAN W. BROWN JAMES CHAPMAN. 

